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Is there a shortcut instead of doing the problem 21 times?
most definitely it's called using scientific notation and rules for exponents
the general format for scientific notation a*10^n where a is greater than zero and less than 10 n is an integer
when you multiply numbers/variables with the same base you add the exponents when you divide numbers/variables with the same base you subtract the exponents
quotient is what you get when you divide
Okay, so in this case we are dividing. Tell me if I am doing this correctly, 21-3? Then 2x10 and 8x10.
So, I got 250. Is that correct?
dont leave meh qq
Oh...that was the answer... cx
review the process
scientific notation is used to work with very large and very small numbers properties for multiplication says you can rearrange how you combine terms to multiply them regroup to work with like terms use arithmetic and rules of exponents format the result in standard format (a*10^n)
Can you give me a quick example of regrouping please?
do you understand the steps I used and can apply them on your own now?
Well, I forgot how to regroup like terms and the rest i just am stumped at....
|dw:1441821197142:dw| yep thats what i got
using scientific notation we group the 10^n terms
then apply the rules for exponents to simplify that part
But i thought there is no more exponents left...
I am reviewing the steps how about if you try the original problem by yourself and the let me know if you have any questions
Oh, okay. But i thought i was doing the original problem...
start fresh and do it on your own
start by regrouping the "regular" and the "powers of 10"